Sad-iron.



' G. J. JOHNSON.

SAD IRON. 7 APPLICATION FILED MAY 28, 1913.

1,088,228. Patented Feb. 24, 191:1

I I I I I I I l I I l I I I I I l I I I I II I 6'5 I J2 1 J7 6'2 1 L H l L l LI 1 E jnuenior m'znesses Ciz'arles AZv Johnson STATES PATENT FI C.

CHARLES J. JOHNSON, OF CEDAR RAPIDS, IOWA, ASSIGNOB, TO THE JOHNSON GAS APPLIANCE COMPANY, OF CEDAR RAPIDS, IOWA, A CORPORATION.

SAD-IRON.

Specification of Letters Patent.

Patented Feb. 24c 1914.

Original application filed May 9, 1912, SerialNo. 696,134. Divided and. this application filed May 28, 1913. Serial No. 770,431.

To all whom it may concern:

Be it known that I, CHARLES J. J OHNSON, citizen of the United States, residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented certain new and useful Improvements in Sad-Irons, of which the following is a specification.

The present application is a division of that filed by me on May 9, 1912, Ser. No. 696,134, on which Letters Patent were granted July 22, 1913, No. 1,068,245.

This invention has specific reference to sad irons adapted for use in large or small laundries, homes, factories or institutions.

The sad iron of this invention is of that class which are heated from within preferably by a burning jet of gas, and in which the temperature is pre-determined and of different degrees when the iron is at rest and when in use.

The objects of my invention are, therefore, to readily fix and maintain a low temperature for the iron when not in use, and to readily induce a higher temperature and maintain it at a pre-determined degree, if desired, when the iron is being operated. W hen these temperatures are adjusted for a particular work in hand the controlling devices require no further attention, thus securing a maximum efficiency. These objects are attained by the mechanism illustrated in the accompanying drawing, in which Figures 1 and 2 are, respectively, end and side elevations, partly in section, showing an internally gas heated sad iron embodying the features of this invention.

In said illustration, 51 indicates the iron, 52 the handle supports, 53 the handle, 54 the mixing chamber of the burner, 55 the valve housing, 56 the throttle valve, 57 its spring, 58 the throttle operating lever located in an elongated recess in the handle 53, and pivoted at 58*, 59 a spring-returned locking bolt for holding said lever depressed, 60 the gas supply nipple for the attachment of a flexible tube, 61 the bypass around the throttle and 62 the pin valve controlling the by-pass.

In the invention presented in my original application, above referred to, the act of re moving the sad iron from its station of rest automatically increased the heat in the iron and replacing the iron automatically decreased the heat, the controlling valve mechanism being located at said station. In the present invention, the controlling valve mechanism, being carried on the iron itself, permits the heat to be regulated, reduced, increased or cut off, regardless of the location of the iron. Various forms of mechanism may be adopted for this purpose. The form illustrated is preferred, wherein the valve mechanism is actuated by the hand of the operator in using the iron.

In operating the iron described, the needle valve 62 may be set to maintain the desired minimum flow of gas. Then as the operator grasps the handle of the iron and moves the iron over the work the lever 58 is depressed and the throttle valve 56 unseated thereby. Thus the desired amount of gas is permitted to flow through the mixer 54 to the interior burner. On releasing the iron the throttle is closed by the spring 57. If it is desired to maintain the maximum flow of gas the lever 58 may be depressed farther into the groove or recess of the handle 58 until the expanded head of the locking bolt 59 can be pushed into the undercut notch 63 in the end of the said lever. When itis desired to release the lever 58 it is depressed until the bolt 59 is returned to normal position by its spring 64. The throttle will then close upon the removal of the operators hand from the handle of the iron.

The invention claimed is 1. In an internally'heated sad iron, the combination with the inlet for gas, of a throttle valve in said inlet, a lever pivoted to said iron for opening said valve and having its operating end extended along the handle of the iron so that it will be actuated by the hand of the operator grasping said handle, means for closing the throttle when the operators hand is removed from the handle, and means independent of the throttle for passing a small amount of gas to the burner within the sad iron.

2. In an internally heated sad iron, the combination with the inlet for gas, of a throttle valve in said inlet, a lever pivoted to said iron for opening said valve and having its operating end extended along the handle of the iron so that it will be actuated by the hand of the operator grasping the handle, means for closing the throttle when the operators hand is removed from the handle, a by-pass around said throttle valve, and a valve for controlling said by-pass whereby a desired amount of heat may be maintained in said iron ,during intervals of non-use thereof.

3. The combination of an internally heat-- ed sad iron the handle of Which has a recess in its upper side, an inlet for gas, a throttle valve in said inlet, a lever for opening said valve pivoted to the iron and having its operating end movable in said recess in the handle, means in opposition to said lever tending to close said valve whereby the throttle is opened when the operators hand grasps the handle and closed when his hand is taken therefrom, and a lock for holding sai dh'andle in depressed position When desired.

4. The combination of an internally heatedsad iron having a handle recessed along its upper side, an inlet for gas, a throttle valve in said inlet, a lever for opening said valve pivoted to the iron and having its operating end movable in said recess and provided with a locking notch, a spring for returning said lever and valve to closed posi tion, and a locking bolt in the end of said handle but normally out of engagement with said notch for holding down the operating end of said lever when it is desired to maintain the maximum degree of heat in the iron.

In testimony whereof I aflix my signature in presence of two Witnesses.

CHARLES J. JOHNSON.

lVitne sses JAMEs NV. Goon, E N KAoHn n rrER.

Copies of this patent Iggy be obtained for five cents each, by addressing the 3 Commissioner of Patents Waehin q 11 

